Fix ITensorMPS tests using StableRNGs

Author: mtfishman

src/lib/ITensorMPS/test/Project.toml

@@ -6,5 +6,6 @@ ITensors = "9136182c-28ba-11e9-034c-db9fb085ebd5"
 JLD2 = "033835bb-8acc-5ee8-8aae-3f567f8a3819"
 NDTensors = "23ae76d9-e61a-49c4-8f12-3f1a16adf9cf"
 OptimKit = "77e91f04-9b3b-57a6-a776-40b61faaebe0"
+StableRNGs = "860ef19b-820b-49d6-a774-d7a799459cd3"
 Suppressor = "fd094767-a336-5f1f-9728-57cf17d0bbfb"
 Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"

src/lib/ITensorMPS/test/base/Project.toml

@@ -4,4 +4,5 @@ HDF5 = "f67ccb44-e63f-5c2f-98bd-6dc0ccc4ba2f"
 ITensors = "9136182c-28ba-11e9-034c-db9fb085ebd5"
 JLD2 = "033835bb-8acc-5ee8-8aae-3f567f8a3819"
 NDTensors = "23ae76d9-e61a-49c4-8f12-3f1a16adf9cf"
+StableRNGs = "860ef19b-820b-49d6-a774-d7a799459cd3"
 Suppressor = "fd094767-a336-5f1f-9728-57cf17d0bbfb"

src/lib/ITensorMPS/test/base/test_mpo.jl

@@ -2,6 +2,7 @@
 using Combinatorics
 using ITensors
 using NDTensors: scalartype
+using StableRNGs: StableRNG
 using Test
 
 include(joinpath(@__DIR__, "utils", "util.jl"))
@@ -812,11 +813,11 @@ end
     N = 6
     sites = [Index(2, "Site,n=$n") for n in 1:N]
     seed = 623
-    mt = MersenneTwister(seed)
-    K = random_mps(mt, sites)
+    rng = StableRNG(seed)
+    K = random_mps(rng, sites)
     L = MPO(K)
-    result = sample(mt, L)
-    @test result ≈ [1, 2, 1, 1, 2, 2]
+    result = sample(rng, L)
+    @test result ≈ [1, 1, 2, 1, 1, 1]
   end
 
   @testset "MPO+MPO sum (directsum)" begin

test/Project.toml

@@ -15,6 +15,7 @@ OptimKit = "77e91f04-9b3b-57a6-a776-40b61faaebe0"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
 QuadGK = "1fd47b50-473d-5c70-9696-f719f8f3bcdc"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
+StableRNGs = "860ef19b-820b-49d6-a774-d7a799459cd3"
 Suppressor = "fd094767-a336-5f1f-9728-57cf17d0bbfb"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 VectorInterface = "409d34a3-91d5-4945-b6ec-7529ddf182d8"